What is 20% of a Number?
To find 20% of any number, multiply it by 0.20 (or equivalently, divide by 5). Use the calculator below for instant results.
The formula
20% of X = X × 20 ÷ 100 = X × 0.20 = X ÷ 5
All three forms give the same result. The divide-by-5 shortcut is the easiest to do in your head.
Common answers
| Number | 20% of it |
|---|---|
| 10 | 2 |
| 20 | 4 |
| 25 | 5 |
| 50 | 10 |
| 75 | 15 |
| 100 | 20 |
| 150 | 30 |
| 200 | 40 |
| 250 | 50 |
| 300 | 60 |
| 500 | 100 |
| 1,000 | 200 |
| 1,500 | 300 |
| 2,000 | 400 |
The mental shortcut: divide by 5
Because 20% = 1/5, dividing any number by 5 gives 20% of it. This works well for round numbers:
- 20% of 60 → 60 ÷ 5 = 12
- 20% of 85 → 85 ÷ 5 = 17
- 20% of 450 → 450 ÷ 5 = 90
For odd numbers, find 10% first (move decimal left), then double it: 20% of 37 → 10% = 3.7, doubled = 7.4.
Real-world uses of 20%
- Tips — a 20% tip is the standard for good service in the US.
- Discounts — "20% off" is one of the most common sale promotions.
- VAT — the standard UK VAT rate is 20%.
- Tax — a 20% income tax bracket applies to many earners in the UK.
- Savings goals — the 50/30/20 budgeting rule suggests saving 20% of income.
Related: other common percentages of a number
| Percentage | Shortcut | Example (of 200) |
|---|---|---|
| 10% | Move decimal left | 20 |
| 15% | 10% + half of 10% | 30 |
| 20% | Divide by 5 | 40 |
| 25% | Divide by 4 | 50 |
| 30% | 10% × 3 | 60 |
| 50% | Divide by 2 | 100 |
Use the Percentage Of Calculator to find any percentage of any number instantly.
FAQ
What is 20% of 100?
100 ÷ 5 = 20. Or 100 × 0.20 = 20.
What is 20% of 50?
50 ÷ 5 = 10.
What is 20% of 200?
200 ÷ 5 = 40.
What is 20% of 500?
500 ÷ 5 = 100.
What is 20% of 1000?
1000 ÷ 5 = 200.
What is 20% of 75?
75 ÷ 5 = 15. This is a common tip on a $75 restaurant bill.